New thio-compounds as corrosion inhibitor for steel in 1M HCl

Elayyachy, M.; Idrissi, A. El; Hammouti, B.

doi:10.1016/j.corsci.2005.09.016

Cited by 232 publications

(74 citation statements)

References 24 publications

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“…2). A depressed semicircle, as often obtained in acidic media [4,5,11] can be seen. The difference from theoretical results is generally attributed to Cole-Cole [35,36] and/or Cole-Davidson [37] representations inherent to frequency dispersion, generally attributed to the generation of microscopic roughness at the surface during the corrosion process [38,39].…”

Section: Results Of Eis Measurementsmentioning

confidence: 84%

“…When both of these features combine, enhanced inhibition can be observed. Several amines [3][4][5], aminothiols [6][7][8], thio-compounds [9][10][11][12], triazole [13][14][15][16], tetrazole [17][18][19], imidazole [20][21][22], thiazoles [23][24], phosphonate [25] and surfactants [26,27] exhibit good inhibitory effect in hydrochloric acid. Notwithstanding several structural similarities with some of the above mentioned compounds, the derivatives of benzothiazine have not been studied, in our knowledge, as steel corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

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New Mechanism Synthesis of 1,4-Benzothiazine and its Inhibition Performance on Mild Steel in Hydrochloric Acid

Aloui¹,

Forsal²,

Sfaira³

et al. 2009

Port. Electrochim. Acta

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Abstract1-(3-methyl-4H-1,4-benzothiazin-2-yl)ethanone (1,4-BT) was synthesised via a new mechanism. 1,4-BT was thereafter tested as corrosion inhibitor of mild steel in hydrochloric solution at 293 K by weight loss measurements and electrochemical techniques (potentiodynamic polarisation, polarisation resistance, impedance spectroscopy (EIS)). Inhibiting efficiency (E%) increased with concentration and reached highest values up to 98% even at low concentration with changing the mechanism of the corrosion process. Results obtained showed that the inhibitor studied was an efficient inhibitor, especially in cathodic domain. The temperature effect on the corrosion behaviour of mild steel in 1 M HCl with and without 1,4-BT at 5 10 -3 M was studied in the temperature range from 293 to 333 K. E% remains the same even at high temperature. The adsorption free energy and activation parameters for the mild steel dissolution reaction, in the presence of 1,4-BT, were determined. 1,4-BT is adsorbed on the mild steel surface according to a Langmuir isotherm adsorption model.

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Section: Results Of Eis Measurementsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

New Mechanism Synthesis of 1,4-Benzothiazine and its Inhibition Performance on Mild Steel in Hydrochloric Acid

Aloui¹,

Forsal²,

Sfaira³

et al. 2009

Port. Electrochim. Acta

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“…where Ɵ is the degree of surface coverage, C inh is the inhibitor concentration in the electrolyte, and K ads is the equilibrium constant of the adsorption process and is related to the standard Gibbs energy of adsorption, ∆G o ads , according to [55]: (15) where R is the universal gas constant and T is the absolute temperature; the value 55.5 in the above equation is the concentration of water in solution in mol/L. The plot of C inh /Ɵ vs. C inh gave a straight line with an intercept of 1 K-1; the Langmuir adsorption isotherms for the adsorption of inhibitor (OOMW-Ph) on the steel surface are shown in Fig.7.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Phenolic and non-Phenolic Fractions of the Olive Oil Mill Wastewaters as Corrosion Inhibitor for Steel in HCl medium

Bouknana

Hammouti

Messali

et al. 2014

Port. Electrochim. Acta

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The effect of the phenolic (OOMW-Ph) and non-phenolic (OOMW-NPh) fractions of the extract of olive oil mill wastewaters was evaluated as corrosion inhibitor of steel in molar hydrochloric using weight loss measurements and electrochemical polarisation. The results obtained reveal that the referred compounds reduce the corrosion rate. The inhibiting action increases with the concentration of the extract compounds to attain 88.9% and 89.1% of OOMW-Ph and OOMW-NPh, respectively. The increase in temperature leads to a decrease in the inhibition efficiency of the compounds in the temperature range 303 at 333 K. The adsorption isotherm of the inhibitors on the steel surface has been determined. The thermodynamic data of activation and adsorption are determined as well. The phenolic compound (bioactive) most abundant in OOMW extracts is hydroxytyrosol (4 -(2-hydroxyethyl) -1, 2-benzenediol), playing an important role in the effect of the anti-corrosion, either alone or in synergy with other two compounds (tyrosol and oleuropein (4 -(2-hydroxyethyl) phenol) which are present with considerable amounts.

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“…The increase of radius of plot indicates the increase of impedance due to increase in number of inhibitive molecules present in the extract concentrations and also indicate that the corrosion rate of mild steel is decrease with increase of extract in H2SO4 solution. By addition of inhibitor, it increases the value of charge transfer resistance due to creation of protective film on mild steel or solution interface and reduces the double layer capacitance and increases in thickness of electronic double layer [27][28][29]. The charge transfer resistance Rct and double layer capacitance Cdl are computed from the semicircles are shown in Table-5.…”

Section: Electrochemical Measurement Eis Measurementsmentioning

confidence: 99%

Tribulus terrestris Extracts: An Eco-Friendly Corrosion Inhibitor for Mild Steel in H2SO4 Medium

Chaudhary¹,

Tak²

2017

Asian J. Chem.

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INTRODUCTIONThe use of mild steel in industries is due to its availability, good strength and comparatively low cost. The overall cost of metal is the total cost of itself plus its maintenance cost and it can be reduced by reducing the maintenance cost. The maintenance cost can be controlled and minimized. But presently in all countries, most of the industries are facing the problem of corrosion of mild steel in acidic medium [1]. It involves a significant cost expense for prevent or non-prevent of the metals. On the one hand if protection methods are not used, the maintenance and renovation cost will be increased due to many premature, unexpected and expensive failure in system. On the other hand, if protection methods are used, it involves the cost of corrosion prevention but protection of metal is a powerful tool to reduce the overall cost and liabilities of the system. The cost also increases due to high temperature and corrosive sulphur gases, surrounding chemical and petroleum industries in industrial areas. Cost of corrosion will escalate substantially during the next decade because of worldwide shortages of construction materials, higher energy costs, aggressive corrosion environment in coal conversion processes and other factors. In fact our economy would be drastically changed if there is no corrosion and appliances would not require coatings. However, corrosion rate can be controlled and minimized. Most of the methods reported in literature are not only expensive but also toxic in nature. Therefore, a great need to investigate a non-toxic replacement that is compatible with current industrial technologies with their availability and relatively low cost, naturally substances. The easily available plant Tribulus terrestris can be used as low-cost, eco-friendly corrosion inhibitor for mild steel in aggressive industrial environment. The inhibition efficiencies of different extracts (fruit, leaf and stem) in relation to the concentration of inhibitor and temperature were determined by mass loss method. Further electrochemical measurements (EIS and potentiodynamic polarization) were also done. Surface analysis was examined by scanning electron microscope. The adsorption process obeys Langmuir adsorption isotherm. All these analysis confirm that plant Tribulus terrestris has good properties to prevent the corrosion of mild steel in acidic medium.

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New thio-compounds as corrosion inhibitor for steel in 1M HCl

Cited by 232 publications

References 24 publications

New Mechanism Synthesis of 1,4-Benzothiazine and its Inhibition Performance on Mild Steel in Hydrochloric Acid

New Mechanism Synthesis of 1,4-Benzothiazine and its Inhibition Performance on Mild Steel in Hydrochloric Acid

Phenolic and non-Phenolic Fractions of the Olive Oil Mill Wastewaters as Corrosion Inhibitor for Steel in HCl medium

Tribulus terrestris Extracts: An Eco-Friendly Corrosion Inhibitor for Mild Steel in H2SO4 Medium

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